Patents by Inventor Hidehiro Nonaka

Hidehiro Nonaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for directly cooling melted thermoplastic resins
    Patent number: 4100244
    Abstract: Direct cooling of melted thermoplastic resins, while in a continuous extruding operation, can be achieved, by pouring into them a coolant such as pure water, liquid nitrogen or the like in the cooling region of the continuous extruder so that the resins are directly cooled by the latent heat of the coolant or the temperature difference between the resins and the coolant.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: July 11, 1978
    Assignee: Japan Steel Works LTD
    Inventor: Hidehiro Nonaka